what is vale of a if a is integer?
1.a4=1
2.a3+1=0

• Answer: a=-1.From 2nd equation,
  a^3+1=0=> a^3=-1
  
  if a^3 is -1 then a must be -1(-1)^3=-1
  And it also satisfies equation 1.
  So possibly a=-1.
  
• 9 years agoHelpfull: Yes(9) No(2)
• a4=1;
  a2=-1 and +1,
  a=-1 and +1,
  
  -1 satisfy the equation so the value of a is (-1)
• 9 years agoHelpfull: Yes(6) No(3)
• either of the statement alone is sufficient
• 9 years agoHelpfull: Yes(3) No(1)
• ans:-a= -1
  
  a^4=1 can also be written as ------ a.a^3=1
  therefore a^3=1/a
  so putting it in 2nd equation a^3+1=0 we get
  1/a+1=0
  which gives value of a=-1
• 8 years agoHelpfull: Yes(1) No(0)
• it will be -1
• 9 years agoHelpfull: Yes(0) No(0)
• there should be only single statement ..... both sentence contradict to each other to get value a
• 8 years agoHelpfull: Yes(0) No(0)
• as a^4=1, a^2=1 or -1, but sqrt(-1) is imaginary; also that doesn't satisfy 2nd condition. So a^3=-1 condition implies that a must be -1.
• 8 years agoHelpfull: Yes(0) No(0)
• answer for a is -1.
• 5 years agoHelpfull: Yes(0) No(0)
• 1 st 3 successor and last 3 preccessor
• 5 years agoHelpfull: Yes(0) No(0)